diff --git a/libraries/Util.php b/libraries/Util.php
index ad777908c4..df219cfb4b 100644
--- a/libraries/Util.php
+++ b/libraries/Util.php
@@ -4562,7 +4562,7 @@ class Util
             ->render(
                 array(
                     'pos' => $pos,
-                    'unlim_num_rows' => $_REQUEST['unlim_num_rows'],
+                    'unlim_num_rows' => intval($_REQUEST['unlim_num_rows']),
                     'rows' => $rows,
                     'sql_query' => $sql_query,
                 )